To be certain you have it at your chosen centerline, I would check at .050 lobe lift on both sides of the intake lobe and figure from there. I would guess 108 would be a good place to run it, unless someone you trust advises different. I run mine at 110, but i have only 3065 weight and actual 6200 stall as well as a torqueflite. My cam is 285/ 296/ 114 ,.870 gross int lift